Dynamic pressurizing device for bone trauma repair

Abstract

The invention discloses a dynamic pressurizing device for bone trauma repair. The dynamic pressurizing device comprises a bone fracture plate with the inner surface cooperating with the shape of the lower part of the greater trochanter of the femur, screw holes formed in the bone fracture plate a pressurizing screws inserted in the screw holes, wherein the central axis of each screw hole inclines upwards; each screw hole comprises a bowl-shaped lower part and a cylindrical upper part, a clamping structure is arranged at the end, close to the inner side of the bone fracture plate, of the lower part, and the upper part is of an unthreaded hole structure; the lower part of each pressurizing screw is a locking structure cooperating with the clamping structure, and the upper part of each pressurizing screw is a non-locking structure capable of moving in the corresponding screw hole; and locking holes are further formed in the positions, located on the lower parts of the screw holes, of the bone fracture plate, and locking nails are arranged in the locking holes in a penetrating mode. The dynamic pressurizing device can play a certain role in protecting soft tissues such as muscles around the femur, and can also improve the fixing effect of the femur.

Description

technical field [0001] The invention belongs to the field of orthopedic instruments, and in particular relates to a dynamic pressurization device for treating and repairing femoral neck fractures. Background technique [0002] The treatment methods for femoral neck fractures are divided into conservative treatment and surgical treatment. For unstable femoral neck fractures, surgical treatment is generally used. For patients under the age of 65, surgical reduction and internal fixation are often used. At present, internal fixation of femoral neck fractures mostly adopts three hollow screw fixation techniques. The needle is inserted from the subtrochanteric part of the femur, passes through the trochanteric part, the femoral neck and the femoral head to achieve the effect of fixing the broken end of the fracture. Although this technique can pressurize and fix the broken end of the fracture, since the three hollow screws are not connected to each other, and there is no other su...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a dynamic compression device for bone trauma repair in view of the deficiencies of the prior art, which is used to solve the problem of locking the plate when the compression screw moves backward relative to the femoral neck during the dynamic compression process of the prior art It also retreats relative to the femoral neck, resulting in compression, damage to soft tissues such as muscles around the femur, and technical problems such as failure of femoral head fixation

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